500 Error when selecting Paypal since April 9

[microtribe]

My cart, which has been working for several months, just stopped working with Paypal at checkout. Nothing was changed, so I assume it's a change on Paypal's end? Maybe to do with the Heartbleed bug? Does the Virtuemart Paypal module have to be updated? Customers get a 500 error when selecting confirm payment, after choosing Paypal at checkout.

Any help appreciated.

Tony

[jenkinhill]

http://forum.virtuemart.net/index.php?topic=79799.0